The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense.GPS is utilized for commercial applications as well as consumer needs, and because those commercial uses can get quite specialized.

Steps

1

Satisfy your needs. Do make a list of the features you need for your map so that you do not get confused over it. Always make sure that you make a best buy.

2

Be sure that you have POI. Your GPS maps must have a comprehensive listings of Point of Interest. Now you will never have to search for ATM,it is just a tap away. POI may include any of the landmarks which may be related to your work like a temple, restaurants, hotels, gas stations, parks.

3

Use a large screen. You must ensure you have large screen to ensure large map viewing area.

4

Make sure that it has Voice Alert: You must make sure that your map provides with a clear and multiple voice alerts on upcoming user defined point of Interests in all the directions to reach the destination.

5

See if it has bird-eye view. Do make sure that your map contains various enhancements like Bird-eye view ,an enhancement of standard map view.

6

Night color skin. You must make sure that your map contains enhanced features like Night color skin ,in order to assist nighttime driving.

7

Show route. You must make sure that your map indicates proper distance as well as estimated traveling times,which helps you in making your journey easier.

8

Driving direction. You must make sure that your maps provides with detailed, clear and visible driving directions.

9

Avoid road features. You must make sure that your map contains select the avoid road feature.

10

Memory: You must make sure that your map has enough memory ,so that you do not face problems while you are moving from one state to another as storing detailed map data necessary for navigating requires a lot of memory.

11

Price. You must make sure that the map is within your budget with enough features required by you.

12

Upgrading. You must make sure that you can easily upgrade your GPS map as and when required may be with a nominal charge.